PREPAID EXPENSES AND OTHER (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 43.3	$ 34.6
Other	66.2	50.3
Prepaid expenses and other	$ 109.5	$ 84.9